Box enclosure for trucks



FIG. 1 is a perspective view of the top, rear and one side of a box enclosure for trucks showing my new design;

FIG. 2 is a dise elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a perspective view of the top, rear and opposite side thereof on a reduced scale it being understood that the broken lines are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a box enclosure for trucks, as shown and described. 